//
//  MainTabBar.swift
//  微博
//
//  Created by 吴思达 on 16/3/6.
//  Copyright © 2016年 吴思达. All rights reserved.
//

import UIKit

class MainTabBar: UITabBar {

    override init(frame: CGRect) {
        super.init(frame: frame)
        
        addSubview(plusBtn)
    }

    required init?(coder aDecoder: NSCoder) {
//        fatalError("init(coder:) has not been implemented")
        super.init(coder: aDecoder)
    }

    override func layoutSubviews() {
        super.layoutSubviews()
        
        let w = UIScreen.mainScreen().bounds.width / 5
        let h = self.bounds.height
        let rect = CGRect(x: 0, y: 0, width: w, height: h)
        var index : CGFloat = 0
        for subview in subviews{
            if subview.isKindOfClass(NSClassFromString("UITabBarButton")!){
                subview.frame = CGRectOffset(rect, w * index, 0)
                index += (index == 1 ? 2 : 1)
            }
        }
        plusBtn.frame = CGRectOffset(rect, 2 * w, 0);
        
    }
    
    lazy var plusBtn: UIButton = {
        
        let btn = UIButton()
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button"), forState: .Normal)
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button_highlighted"), forState: .Highlighted)
        btn.setImage(UIImage(named: "tabbar_compose_icon_add"), forState: .Normal)
        btn.setImage(UIImage(named: "tabbar_compose_icon_add_highlighted"), forState: .Highlighted)
        
        return btn
        
    }()
    
    
}
